Automatic dual temperature cooling system for motors



Feb. 9, 1937. .1. z. BRU-BAKER 2,069,749

AUTOMATIC DUAL TEMPERATURE COOLING SYSTEM FOR MOTORS Filed June 12, 1934 Patented Feb. 9, 1937 UNITED STATES PATENT OFFICE AUTOMATIC DUAL TEIVIPERATURE COOLING SYSTEM FOR MOTORS Jacob Z. Brubaker, Manheim, Pa.

Application June 12, 1934, Serial No. 730,355

1 Claim. (01. 123-178) This application is an improvement upon my Patent 1,985,240 for Forced feed-cooling system for motors and of my Patent 1,789,540, and is animprovement and in part a continuation of my Patent 1,962,134 patented June 12, 1934.

The object of my invention is to provide an improvement over my prior cooling systems for maintaining the heat of the head at a higher temperature than in the block of the motor, to improve combustion and maintain proper lubrication, whether the automobile is driven at low or high speed; and to provide novel means for facilitating the starting ofv the engine in cold weather; and to provide novel means for use in emergency, such as when there is a leaky radiator. and for maintaining the proper operation of the motor. I attain these and other objects cylinder jacket 2 and cylinder head 3. Opening out of the cylinder head 3 I-provide a thermostat 4, connected to which is a rubber coupling 5, which in turn is connected to themetal conduit section II, which in turn is connected by rubber coupling 6 to the conduit 7|, which opens into the upper end of the radiator 8.

I provide a conduit 9, opening out of the lower end of the radiator. I provide a rubber coupling l0, connecting conduit 9 with conduit II, which in turn is connected by rubber coupling l2 with the conduit [3 opening into the pump casing I4,

by which water is forced through the water jacket 2, as indicated by the arrows, some of the water passing through the aperture 2| in the gasket 20 and into the cylinder head 3, while some of the water passes through the outlet [5 into and through the by-pass I 6 to the conduit section H, which is connected with the upper end of the radiator.

As shown in Fig. 1 'of the drawing, I provide a suitable manually operated valve I8 in the lower end of the by-pass I6, by which the circu lation of the water through that' by-pass may be stopped when desired to meet emergency con- 5 for automatic regulation of the circulation of water through by-pass It, In operation the water circulates as indicated by the arrows, being pumped by the pump casing through the water jacket- 2, some of the water passing through the'apertures 2| in the gasket 20 into 5 the cylinder head 3, and some of the water passing through the outlet l5 into the by-pass It. From cylinder head 3 the water passes through thermostat 4, coupling 5, conduit 11, coupling 6 and conduit 1 into the inlet reservoir of the ral0 diator, from whence it flows downward into the bottom of the radiator, through conduit 9, coupling Ill, conduit ll, coupling l2 and conduit l3, into the pump casing M, to complete the opera-- tion. The water flowing through by-pass it in- 15 creases the circulation ofcooler water through the cylinder block, and when it flows into the stream flowing through conduit I! it is relatively cooler and tends to reduce the temperature of the water, flowing thence through members 6 20 and 1 into the radiator, and also tends to check the evaporation of alcohol and water by reducing the temperature of they liquid. At the outset, thermostat l closes the conduit 5 until the desired temperature is reached, when it will open that 25 conduit'and permit some-of the water to flow directly through that conduit while a portion of the water continues to flow through by-pass It.

When an automobile is driven at a speed of 45 miles an hour. or less, the temperature of the 30 water in the cylinder head 3 will'be approximately 180 degrees Fahrenheit, while the temperature of the water in the water jacket 2 of the cylindr block will be approximately 100 degrees Fahrenheit. If the automobile'is traveling at a. 35 high speed of, say, 60 miles an hour, or over, the

temperature of the water in the cylinder head water is low, the operator closes the manually 45 the temperature rises, at a predetermined degree the thermostatic valve will open and allow the, circulation of water through the by-pass in the mannerheretoi'ore described.

What I claim is:

In an automatic dual temperature system for internal combustion engines, thecombination of a cylinder block having a water-jacket, a cylinder-head having a water-jacket in communication with said cylinder-block water jacket, a ra- 10 diator, a conduit extending from the cylinderhead water jacket to the radiator and having a thermostatic valve therein, a continuously open conduit through which water from the water jacket of the cylinder block may flow into the conduit which leads from the cylinder head to I the radiator at a point between the thermostatic valve and the radiator, and a conduit i'rom the radiator to the adjacent end of the water jacket of the cylinder block.

JACOB Z. BRUBAKER. 

